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Processing GHG emissions disclosures

Last registered on July 03, 2025

Pre-Trial

Trial Information

General Information

Title
Processing GHG emissions disclosures
RCT ID
AEARCTR-0016263
Initial registration date
June 26, 2025

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
June 27, 2025, 9:15 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
July 03, 2025, 3:57 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Region
Region

Primary Investigator

Affiliation
LMU Munich School of Management

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2025-07-01
End date
2025-09-30
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In this field experiment, I assess how users of sustainability reports extract emissions information and, building on that, evaluate firms’ emissions performance for European firms.
External Link(s)

Registration Citation

Citation
Wagner, Victor. 2025. "Processing GHG emissions disclosures." AEA RCT Registry. July 03. https://doi.org/10.1257/rct.16263-1.1
Experimental Details

Interventions

Intervention(s)
Intervention (Hidden)
I pursue a 2 x 2 between-subjects experimental design with the following two interventions:
* First, I randomize whether participants see sustainability reports published before (i.e., for the fiscal year 2022) or after (fiscal year 2024) the CSRD took effect. As reports published for the fiscal year did not include any requirement from the Directive, these constitute a plausible baseline. I ensure, however, that reports from both years contain the same information. This means that they should only differ in the way the information is presented due to standardization.
* Second, I randomize whether or not participants have access to an AI tool designed to extract information from the reports given the increasing role of AI in analyzing large, unstructured datasets. The AI tool is built specifically for the purpose of retrieving information from corporate reports and leverages a Retrieval Augmented Generation (RAG) architecture.
Intervention Start Date
2025-07-01
Intervention End Date
2025-09-30

Primary Outcomes

Primary Outcomes (end points)
To conceptualize processing costs, I rely on the framework proposed by Blankespoor (2019). Specifically, I focus on the latter two stages, acquisition and integration costs:
* My measure of acquisition costs is the time it takes participant p to extract the relevant information from all reports in industry r.
* My measure of integration costs is based on participant p’s understanding of industry r’s emissions performance and is computed as the sum of questions answered correctly for industry r.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
* Ranking dispersion
* Learning
* Querying behavior
* Task satisfaction
* Report engagement
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Participants get access to four firms' annual and/or sustainability reports over a custom website. On the website, they can collect and compare quantitative indicators and take notes. They then have to answer questions on these reports.
Experimental Design Details
After entering my custom experimental platform, participants read the task description and see an overview that lists four firms from one of two randomly selected industries and the five single-choice questions on which they will be evaluated. Questions relate to absolute and relative emissions, emissions intensity, emissions reduction technologies and emissions targets. Before they start the analysis, I elicit participants’ prior perception of the firms’ ESG performance by letting them rank the companies.

The overview contains a link to a custom subpage that displays each firm’s sustainability report and a table for entering quantitative indicators, along with space for notes. As long as they have not started the assessment task (which starts automatically after 30 minutes, but can be started earlier), participants can access the reports and the AI tool. Once they start the assessment task, participants will have to answer the five questions only relying on their extracted indicators and notes. Having finished the assessment for one industry, participants are asked to rank the companies again allowing me to elicit any changes from their prior assessment, before they are redirected to the second and final industry. To obtain their certificate of completion, they have to answer ten demographical and background questions.
Randomization Method
Assignment to a group inside a treatment arm is independently done on the server when participants log in to the platform.
Randomization Unit
across-participant randomization of two treatment arms (i.e., four groups in total)
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
-
Sample size: planned number of observations
>120 participants
Sample size (or number of clusters) by treatment arms
>30
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
-
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
LMU Munich School of Management Ethics Committee
IRB Approval Date
2025-06-06
IRB Approval Number
N/A

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials